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Via its extracellular N-terminal domain (NTD), the AMPA receptor subunit GluR2 promotes the formation and growth of dendritic spines in cultured hippocampal neurons. Here we show that the first N-terminal 92 amino acids of the extracellular domain are necessary and sufficient for GluR2's spine-promoting activity. Moreover, overexpression of this… (More)

Histone variants are non-allelic protein isoforms that play key roles in diversifying chromatin structure. The known number of such variants has greatly increased in recent years, but the lack of naming conventions for them has led to a variety of naming styles, multiple synonyms and misleading homographs that obscure variant relationships and complicate… (More)

The linker histone H1 binds to the DNA entering and exiting the nucleosomal core particle and has an important role in establishing and maintaining higher order chromatin structures. H1 forms a complex family of related proteins with distinct species, tissue and developmental specificity. In higher eukaryotes all H1 variants have the same general structure,… (More)

The linker histone H1 is a key player in chromatin organization, yet our understanding of the regulation of H1 functions by post-translational modifications is very limited. We provide here the first functional characterization of H1 acetylation. We show that H1.4K34 acetylation (H1.4K34ac) is mediated by GCN5 and is preferentially enriched at promoters of… (More)

Covalent modifications of histones can regulate all DNA-dependent processes. In the last few years, it has become more and more evident that histone modifications are key players in the regulation of chromatin states and dynamics as well as in gene expression. Therefore, histone modifications and the enzymatic machineries that set them are crucial… (More)

BACKGROUND
Covalent histone modifications are central to all DNA-dependent processes. Modifications of histones H3 and H4 are becoming well characterised, but knowledge of how H2A modifications regulate chromatin dynamics and gene expression is still very limited.
RESULTS
To understand the function of H2A modifications, we performed a systematic analysis… (More)

In the recent issue of Molecular Cell, Neumann et al. dissect the effect of H3K56 acetylation on chromatin structure using a novel method for generation of acetylated proteins. This is a valuable addition to the toolkit for those interested in unraveling how posttranslational modifications regulate protein function.

UNLABELLED
The aim of the present study was to determine the prevalence of Leptotrichia amnionii in cervical swabs of women and its possible correlation with HPV infection and the stage of cervical cancer.
MATERIAL AND METHODS
A total of 139 cervical swabs from healthy women with normal cytology, with dysplastic changes and with cervical cancer were… (More)